Nemesis Mask [Darksteel] Merfolk there's an additional combat phase

there's an additional combat phase followed by an additional main phase

if you control at least five other Mountains

"There is no place for mercy in defense of our lives

Set: Guildpact Type: Land — Island Mountain Rarity: Rare ({T}: Add {U} or {R}

Discard three cards: Exile Nezahal

Nemesis Mask [Darksteel] Merfolk there's an additional combat phaseSet: Darksteel Type: Artifact Equipment Uncommon Cost: {3} All creatures able to block equipped creature do so. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)